Remember the Milk client for Windows
Status: Not actively developed, feature-complete. Supported.
WintheM – Windows the Milk – is a simple Remember the Milk (RTM) client for Microsoft Windows, that helps managing RTM tasks from your Windows Desktop. WintheM is simple, easy to learn and use and visually integrates with Windows Vista and 7.
WintheM displays all your tasks, with deadlines and priority in simple list. You can easily add new tasks, set due dates and change priorities, as well as complete, postpone and delete single and multiple tasks at once.